/*
 * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.bpmn.converter.export;

import java.util.List;
import javax.xml.stream.XMLStreamWriter;
import org.activiti.bpmn.constants.BpmnXMLConstants;
import org.activiti.bpmn.converter.util.BpmnXMLUtil;
import org.activiti.bpmn.model.FieldExtension;
import org.apache.commons.lang3.StringUtils;

public class FieldExtensionExport implements BpmnXMLConstants {

    public static boolean writeFieldExtensions(
        List<FieldExtension> fieldExtensionList,
        boolean didWriteExtensionStartElement,
        XMLStreamWriter xtw
    ) throws Exception {
        for (FieldExtension fieldExtension : fieldExtensionList) {
            if (StringUtils.isNotEmpty(fieldExtension.getFieldName())) {
                if (
                    StringUtils.isNotEmpty(fieldExtension.getStringValue()) ||
                    StringUtils.isNotEmpty(fieldExtension.getExpression())
                ) {
                    if (!didWriteExtensionStartElement) {
                        xtw.writeStartElement(ELEMENT_EXTENSIONS);
                        didWriteExtensionStartElement = true;
                    }

                    xtw.writeStartElement(ACTIVITI_EXTENSIONS_PREFIX, ELEMENT_FIELD, ACTIVITI_EXTENSIONS_NAMESPACE);
                    BpmnXMLUtil.writeDefaultAttribute(ATTRIBUTE_FIELD_NAME, fieldExtension.getFieldName(), xtw);

                    if (StringUtils.isNotEmpty(fieldExtension.getStringValue())) {
                        xtw.writeStartElement(
                            ACTIVITI_EXTENSIONS_PREFIX,
                            ELEMENT_FIELD_STRING,
                            ACTIVITI_EXTENSIONS_NAMESPACE
                        );
                        xtw.writeCData(fieldExtension.getStringValue());
                    } else {
                        xtw.writeStartElement(
                            ACTIVITI_EXTENSIONS_PREFIX,
                            ATTRIBUTE_FIELD_EXPRESSION,
                            ACTIVITI_EXTENSIONS_NAMESPACE
                        );
                        xtw.writeCData(fieldExtension.getExpression());
                    }
                    xtw.writeEndElement();
                    xtw.writeEndElement();
                }
            }
        }
        return didWriteExtensionStartElement;
    }
}
